Not to mention - while it might be a one-way deal right now (ReactOS using Wine code) - it was very much a 2-way street until the "audit fiasco" back in 2005...

So for several years before that, Wine actually DID use some of the ReactOS code.

There also is no permanent statement here - only that the current situation with the "validity" of ReactOS code is preventing the Wine folks from accepting anything back for the moment. I suspect if the ReactOS code went through enough scrutiny from non-biased parties - Wine would gladly start accepting it again.